Qualcomm Incorporated

Vikram Reddy Anreddy

Rajiv Laroia

Xinzhou Wu

Jingyuan Liu

Juergen Cezanne

Saurabh R Tavildar

Chenglin Cui

David G Thuel

Bhupinder S Parhar

Junyi Li

Charles Stanski

Method and apparatus related to implementing and/or utilizing different polarization antennas with different corresponding average transmit power levels are described. Inter-cell interference is mitigated by having different cells with different power relationships between polarizations antennas. For example, a first base station transmits at a high average power level on its vertical polarization antenna and transmits at a low average power level on its horizontal polarization antenna. Concurrently, a second base station, which is adjacent to the first base station, transmits at a low average power level on its vertical polarization antenna and transmits at a high average power level on its horizontal polarization antenna. In some hexagonal deployment schemes a base station has at most two adjacent base stations using the same power level to antenna polarization direction relationship as it is using.

Methods and apparatus for using antennas with different polarization and signal transmit powers

An apparatus and method for data centric multiplexing in a wireless communication system with a plurality of channels comprising assigning a first resource to a first of the plurality of channels; assigning a second resource to a second of the plurality of channels wherein the second resource is not the first resource; assigning a third resource to a third of the plurality of channels wherein the third resource is not the first or the second resource; and assigning a fourth resource to a fourth of the plurality of channels by puncturing at least one of the first, second or third resources and skipping the rest of unpunctured first, second or third resources. Further disclosed are apparatus and method for an asynchronous command interface to an encoder and multiplexer module in a wireless communication system.

Method and apparatus for data-centric multiplexing and asynchronous command interface to the encoder and multiplexer modules

A MIMO wireless communications device supports a dual polarized mode of antenna operation and a single polarized mode of antenna operation. Antenna mode selection is performed as a function of signal to noise ration information and/or rank information corresponding to a communications channel matrix. One of a communications device's processing chains is switched between first and second polarization orientation antennas, e.g., vertical and horizontally polarized antennas, as a function of the antenna mode selection. In various embodiments, the dual polarized mode is advantageously used for high SNR users, while in the low SNR regime, where the capacity is limited by received power, the single polarized antenna configuration, sometimes referred to as the spatial MIMO configuration, is used.

Methods and apparatus for using multiple antennas having different polarization

Methods and apparatus for using multiple antennas having different polarizations are described. Polarized antennas are advantageously deployed in a cellular network. Some of the sectors utilize an antenna with a first direction polarization, while other sectors use an antenna with a second direction polarization, for a given carrier. Various embodiments are directed to methods and apparatus related to base station deployment which set up and/or operate base stations in accordance with an advantageous reuse pattern from the perspective of inter-cell and/or inter-sector interference. In some embodiments a plurality of carriers are used in addition to a plurality of different polarization direction antennas. In some such embodiments, a base station is configured so that for a given sector different carriers are associated with different direction polarization antennas. Some embodiments are directed to multi-sector base station implementations.

Methods and apparatus for using polarized antennas in wireless networks including multi-sector base stations

Methods and apparatus for using multiple antennas having different polarizations are described. Polarized antennas are advantageously deployed in a cellular network. Some of the cells utilize an antenna with a first direction polarization, while cells use an antenna with a second direction polarization, for a given carrier. Various embodiments are directed to methods and apparatus related to base station deployment which set up and/or operate base stations in accordance with an advantageous reuse pattern from the perspective of inter-cell interference. In some embodiments a plurality of carriers are used in addition to a plurality of different polarization direction antennas. In some such embodiments, a base station is configured so that for a given cell different carriers are associated with different direction polarization antennas. Some embodiments are directed to single sector base station implementations.

Methods and apparatus for using polarized antennas in wireless networks including single sector base stations

Methods and apparatus which support the use of differently polarized antennas to schedule two or more users employing multiple antennas with different polarization, on the same communications segment, e.g. a time/frequency slab, in either the uplink or downlink are described. Various embodiments include an access node which classifies and schedules wireless terminals to segments as a function of suitability for single polarization direction communications. Some embodiments are directed to methods and apparatus for operating a communications device supporting the use of multiple antennas having different polarization, to implement a polarization based multiple access scheme. Unlike Spatial Division multiple access schemes, the users sharing a communications segment in the polarization based scheme need not be geographically well separated. Another advantage of using the proposed method is that the communications system does not necessarily have to use a complex minimum mean square error receiver or implement successive iteration cancellation techniques, thereby reducing cost and system complexity.

Methods and apparatus for supporting multiple users in a system with multiple polarized antennas

A MIMO wireless communications device supports a dual polarized mode of antenna operation and a single polarized mode of antenna operation. Antenna mode selection is performed as a function of signal to noise ratio information and/or rank information corresponding to a communications channel matrix. One of a communications device's processing chains is switched between first and second polarization orientation antennas, e.g., vertical and horizontally polarized antennas, as a function of the antenna mode selection. In various embodiments, the dual polarized mode is advantageously used for high SNR users, while in the low SNR regime, where the capacity is limited by received power, the single polarized antenna configuration, sometimes referred to as the spatial MIMO configuration, is used.

An apparatus and method for data centric multiplexing in a wireless communication system with a plurality of channels comprising assigning a first resource to a first of the plurality of channels; assigning a second resource to a second of the plurality of channels wherein the second resource is not the first resource; assigning a third resource to a third of the plurality of channels wherein the third resource is not the first or the second resource; and assigning a fourth resource to a fourth of the plurality of channels by puncturing at least one of the first, second or third resources and skipping the rest of unpunctured first, second or third resources.

Method and apparatus for data-centric multiplexing

A communications device, e.g., a mobile wireless terminal, includes a plurality of antennas having different polarization directions. The plurality of antennas includes a first antenna and second antenna which are operated in a coordinated fashion. During reception a signal received via the first antenna is subjected to a phase shift operation before being combined with a signal received via the second antenna. During transmission a signal to be communicated is subjected to a phase shift operation and the phase shifted signal is transmitted over the first antenna while the non-phase shifted signal is transmitted over the second antenna. The amount of phase shift is a function of the difference in polarization directions between the first and second antennas. The novel antenna configuration facilitates the use of the horizontal polarization direction communications between the communications device and a base station without the need for directionally positioning one or more electrical antennas.

Methods and apparatus for supporting communications using antennas associated with different polarization directions

Methods and apparatus for supporting the communication of an information stream using an individual polarization type are described. For example, a first data stream is communicated from a base station sector transmitter using horizontal polarization signals and a second data stream is communicated using vertical polarization signals. A mobile wireless communications device, employing a plurality of dipole antennas associated with different direction polarizations, e.g., a first direction horizontal polarization dipole antenna, a second direction horizontal polarization dipole antenna and a vertical polarization dipole antenna, multiple receiver modules, and a combiner module, facilitates the recovery of horizontal polarization signals without the need for azimuth antenna orienting or repositioning, and also facilitates the recovery of vertical polarization signals. The first data stream associated with horizontal polarization may be, and sometimes is, transmitted concurrently with the second data stream associated with vertical polarization using the same time/frequency air link resources, e.g., segment.

Methods and apparatus for supporting communications using horizontal polarization and dipole antennas

Apparatus and methods for using a linear memory model for encoder output buffering are disclosed. The apparatus and method effect linear memory output buffering by dividing an encoder operation having N sequential frames to be encoded by an encoder into N encoder operations each designated for a single frame transmission, such as in the case of extended frame transmissions having multiple frames. Bits of the N encoder operations are then sequentially buffered in an encoder output buffer, wherein bits of each buffered encoder operation of the N encoder operations are read out of the buffer to a multiplexer engine while bits of a next encoder operation of the N encoder operations is being stored in the encoder output buffer.

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Bridgewater, NJ, United States of America

Vikram Reddy Anreddy